Vortex CK4237 Chain and Sprocket Kit with Hardcoat Aluminum Rear Sprocket - 525 V3

The Vortex CK4237 is a complete 525 V3 chain and sprocket kit engineered for performance-oriented street riders who demand durability beyond standard OEM replacements. This ready-to-install kit maintains stock gearing (17/39) and requires no chain cutting, making installation straightforward and hassle-free.

At the heart of this kit is the Vortex 525RV3 chain — a Japan-made, 110-link sealed chain built to the highest quality standards in the powersports industry. The RV3 Series utilizes a dual pocket sealing system that delivers up to 7 times longer wear life compared to standard O-ring chains, keeping you on the road longer between service intervals.

Kit Contents:

• Steel front sprocket — 17 teeth (OE gearing)
• Hardcoat aluminum rear sprocket — 39 teeth (OE gearing)
• Vortex 525RV3 sealed chain — 110 links, Japan-manufactured
• Rivet-type master link included (clip-type master link sold separately)

Key Features:

• 525RV3 dual pocket seal system — up to 7x longer wear life vs. standard O-ring chains
• Pre-cut to correct length — no chain cutting or modification required
• Hardcoat anodized aluminum rear sprocket for superior durability and reduced rotating weight
• Vortex Performance Links chain manufactured in Japan to exacting tolerances
• Rivet-type master link for secure, reliable chain connection
• Maintains OEM 17/39 gear ratio — ideal for riders who want a long-lasting stock replacement

The 525-pitch RV3 chain is an excellent option for sportbike riders looking for a durability upgrade over a 520 conversion while remaining lighter than the factory 530 setup. Clip-type master links are also available and sold separately if preferred over the included rivet type.